'use strict';
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exports.main = async (event, context) => {
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/**
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* 检测升级 使用说明
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* 上传包：
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* 1. 根据传参，先检测传参是否完整，appid appVersion wgtVersion 必传
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* 2. 先从数据库取出所有该平台（从上下文读取平台信息，默认 Andriod）的所有线上发行更新
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* 3. 再从所有线上发行更新中取出版本最大的一版。如果可以，尽量先检测wgt的线上发行版更新
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* 4. 使用上步取出的版本包的版本号 和传参 appVersion、wgtVersion 来检测是否有更新，必须同时大于这两项，否则返回暂无更新
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* 5. 如果库中 wgt包 版本大于传参 appVersion，但是不满足 min_uni_version < appVersion，则不会使用wgt更新，会接着判断库中 app包version 是否大于 appVersion
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*/
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let {
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appid,
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appVersion,
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wgtVersion,
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} = event;
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const platform_Android = 'Android';
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const platform_iOS = 'iOS';
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const package_app = 'native_app';
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const package_wgt = 'wgt';
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const app_version_db_name = 'opendb-app-versions'
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let platform = platform_Android;
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// 云函数URL化请求
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if (event.headers) {
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let body;
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try {
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if (event.httpMethod.toLocaleLowerCase() === 'get') {
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body = event.queryStringParameters;
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} else {
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body = JSON.parse(event.body);
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}
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} catch (e) {
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return {
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code: 500,
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msg: '请求错误'
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};
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}
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appid = body.appid;
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appVersion = body.appVersion;
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wgtVersion = body.wgtVersion;
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platform = /iPhone|iPad/.test(event.headers) ? platform_iOS : platform_Android;
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} else if (context.OS) {
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platform = context.OS === 'android'
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? platform_Android
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: context.OS === 'ios'
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? platform_iOS
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: platform_Android;
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}
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if (appid && appVersion && wgtVersion && platform) {
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const collection = uniCloud.database().collection(app_version_db_name);
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const record = await collection.where({
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appid,
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platform,
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stable_publish: true
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})
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.orderBy('create_date', 'desc')
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.get();
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if (record && record.data && record.data.length > 0) {
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const appVersionInDb = record.data.find(item => item.type === package_app) || {};
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const wgtVersionInDb = record.data.find(item => item.type === package_wgt) || {};
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const hasAppPackage = !!Object.keys(appVersionInDb).length;
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const hasWgtPackage = !!Object.keys(wgtVersionInDb).length;
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// 取两个版本中版本号最大的包，版本一样，使用wgt包
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let stablePublishDb = hasAppPackage
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? hasWgtPackage
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? compare(wgtVersionInDb.version, appVersionInDb.version) >= 0
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? wgtVersionInDb
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: appVersionInDb
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: appVersionInDb
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: wgtVersionInDb;
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const {
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version,
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min_uni_version
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} = stablePublishDb;
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// 库中的version必须满足同时大于appVersion和wgtVersion才行，因为上次更新可能是wgt更新
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const appUpdate = compare(version, appVersion) === 1; // app包可用更新
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const wgtUpdate = compare(version, wgtVersion) === 1; // wgt包可用更新
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if (Object.keys(stablePublishDb).length && appUpdate && wgtUpdate) {
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// 判断是否可用wgt更新
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if (min_uni_version && compare(min_uni_version, appVersion) < 1) {
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return {
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code: 101,
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message: 'wgt更新',
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...stablePublishDb
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};
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} else if (hasAppPackage && compare(appVersionInDb.version, appVersion) === 1) {
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return {
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code: 102,
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message: '整包更新',
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...appVersionInDb
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};
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}
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}
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return {
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code: 0,
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message: '当前版本已经是最新的，不需要更新'
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};
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}
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return {
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code: -101,
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message: '暂无更新或检查appid是否填写正确'
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};
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}
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return {
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code: -102,
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message: '请检查传参是否填写正确'
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};
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};
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/**
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* 对比版本号，如需要，请自行修改判断规则
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* 支持比对 ("3.0.0.0.0.1.0.1", "3.0.0.0.0.1") ("3.0.0.1", "3.0") ("3.1.1", "3.1.1.1") 之类的
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* @param {Object} v1
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* @param {Object} v2
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* v1 > v2 return 1
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* v1 < v2 return -1
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* v1 == v2 return 0
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*/
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function compare(v1 = '0', v2 = '0') {
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v1 = String(v1).split('.')
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v2 = String(v2).split('.')
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const minVersionLens = Math.min(v1.length, v2.length);
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let result = 0;
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for (let i = 0; i < minVersionLens; i++) {
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const curV1 = Number(v1[i])
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const curV2 = Number(v2[i])
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if (curV1 > curV2) {
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result = 1
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break;
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} else if(curV1 < curV2) {
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result = -1
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break;
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}
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}
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if (result === 0 && (v1.length !== v2.length)) {
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const v1BiggerThenv2 = v1.length > v2.length;
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const maxLensVersion = v1BiggerThenv2 ? v1 : v2;
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for (let i = minVersionLens; i < maxLensVersion.length; i++) {
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const curVersion = Number(maxLensVersion[i])
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if (curVersion > 0) {
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v1BiggerThenv2 ? result = 1 : result = -1
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break;
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}
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}
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}
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return result;
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}
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